Relaxed pollinator‐mediated selection weakens floral integration in self‐compatible taxa ofLeavenworthia(Brassicaceae)

• DOI: 10.3732/ajb.93.6.860
• Publication Date: 2008-02-29T22:42:44Z
• Authors: Ingrid A. Anderson; Jeremiah W. Busch
• Keywords: Brassicaceae

Natural selection should favor the integration of floral traits that enhance pollen export and import in plant populations rely upon pollinators. If this is true, then phenotypic correlations between weaken self‐fertilizing groups do not require pollinator visitation to produce seed. We tested hypothesis Leavenworthia , a genus which there have been multiple independent losses sporophytic self‐incompatibility system found throughout Brassicaceae. In particular, we conducted phylogenetically contrasts trait two pairs self‐incompatible (SI) self‐compatible (SC) sister taxa. support pollinator‐mediated integrates traits, both SC taxa weaker overall comparison The independently derived flowers significantly stamen–petal or pistil–petal correlations, respectively, whereas stamen–pistil correlation remains constant. These patterns suggest relaxation weakens associated with import. retention high further implies these either constrained maintained by favoring successful transfer within secure self‐pollination.